Action for breakdown guns.



A. P. CURTIS.

ACTION FOR BREAKDOWN GUNS.

APPLICATION men MAR. 28. 1913.

Patented Nov. 16, 1915.

2 SHEETSSHEET I.

COLUMBIA PLANUGRAFH co.,wAs!1lNOToN, 0. cv

A. P. CURTIS.

ACTION FOR BREAKDOWN GUNS.

APPLICATION FILED MAR. 28. I9l3.

Patented Nov. 16, 1915.

2 SHEETS-SHEET 2.

ITED STATES PATENT OFTGE.

ARTHUR P. CURTIS, OF FULTON, NEVT YORK, ASSIGNOR TO THE HUNTER ARMS('30., OF FULTON, NEW YORK, A CORPORATION OF NEW YORK.

ACTION FOR BREAKDOWN GUNS.

Application filed March 28, 1913.

To all whom it may concern:

'Be it "known that I, ARTHUR P. CURTIS, a citizen of the United States,and a resident of Fulton, in the county of Oswego and State of New York,have invented a new and useful Action for Breakdown Guns, of which thefollowing is a specification.

This invention has for its object the production of an action forfirearms which is particularly simple in construction, economical inmanufacture, and highly eificient and durable in use; and the inventionconsists in the combinations and constructions hereinafter set forth andclaimed.

In describing this invention reference is had to the accompanyingdrawing in which like characters designate corresponding parts in allthe views.

Figure 1 is a side elevation of a breakdown gun embodying my invention,the side plate being removed and the stock and barrel being broken away,and the cooking lever being shown partly in section. Fig. 2 is a viewsimilar to Fig. 1 illustrating the position of the parts when the gun isbroken open, the fore-end being partly broken away to illustrate themeans for transmitting the movement of the barrel to the cooking lever.

This action for firearms comprises, generally, means for cooking thehammer and for actuating the hammer when the trigger is pulled. Theaction is particularly applicable for break-down guns and is here shownas applied to a break-down gun.

1 is the frame of the firearm, 2 is the barrel hinged at 3 to the framein the ordinary manner, and 4 is the fore-end.

5 is the hammer, 6 the firing pin, 7 the sear, 8 the sear spring, and 9the trigger, of the action or firing mechanism, all of which parts maybe of any desirable form, size and construction, although I have shown aparticular form of firing pin which constitutes the subject matter ofanother application. The hammer also embodies certain features peculiarto this invention WhlCh' features will be hereinafter described. The

. means for cocking and actuating the hammer also includes mechanism fortransmitting the break-down or pivotalmovement of the barrel 2 to thehammer through the main spring. As here shown, this mechanism includesalever 1O pivoted to the forward ex- Speeification of Letters Patent.

tension 11 of the frame beneath the barrel 2, it being here shown asextending lengthwise of the gun, and pivoted by a horizontal pivot 12intermediate of its ends in a recess in the side of said forwardextension, and as having its forward arm extending in front of the pivot3 of the barrel in position to coactwith a shoulder at the rear end ofthe fore-end 4. The rear arm of said lever is provided with meanscoacting with the hammer to cook the hammer and actuate the same. Owingto the simplicity of the lever and associated parts, it isinterchangeable, that is can be used on either the right or left side ofthe gun.

The shoulder provided at the rear end of the fore-end 4 is usually awall 13 of a socket 1A in the rear end of the fore-end into which socketthe front end of the lever 10.

extends. The rear arm of the lever is formed with a socket 15 in whichthe main spring as a coil spring 16 is located, the main spring actingon a part as a plunger 17 slidablein the socket 15 and pressed by;

the main spring into engagement with a cam surface 18 provided on thetail 19 of the hammer 5. The lever 10 serves as a carrier for the mainspring and is operated to tension the main spring or cook the hammer bythe action of the barrels 2. As here shown the tail is located in frontof and below the pivot 20 of the hammer and on the opposite side of thepivot 20, along a diameter, to that on which the head of the hammer islocated. 1'

.mally engaged when the hammer is cocked as shown in Fig. 1, with thecam surface be low said diameterand line, and during the movement of thehammer toward the firing pin 6 under the impulse of the spring-16,

the spring 16 expands or extends and holds the plunger 17 engaged withthe lower end of the surface 18, that is, the end of the tail 19. ,Whenthe hammer is down the upper.

portion ofthe cam surface 18 is nearer the axis 12, than the lowerportion of said surface 18. l @j During the breakingdown of the gun,

.that is, during the relativemovement of the I frame 1 and barrels 2about the axis 3, the shoulder 13 of the fore-end presses against thefront end of the lever 10 and moves the front end of the leverdownwardly von'its pivot and the spring pressed plunger upline and cookthe hammer, the spring 16 expand'ing to effect the cooking of thehammer.

The cam surface is now again nearly concenti'icwith the axis of thelever 12. Upon the return movement of the barrel 2 about its axis 3, thelever is returned to its starting position, Fig. 1, the spring 16 beingagain tensioned, the plunger 17 moving downwardly along the cam 18.The'cam surface 18 is not exactly concentric with the axis 12 but theupper portion is farther away slightly than the lower portionwhen thehammer is cocked. 7

The breaking down of the gun is normally prevented, that is, the frameand barrel are held iii-their normal positions as shown in Fig. 1, bythe usual bolt mechanism consisting of a top lever 21 which operates abolt which takes into a notch 22 in a lug 23 at the rear end of thebarrel 2.

The firing pin 6 is of the form indicated in dotted lines and instead ofbeing heldin its guide passage in the frame by a screw, pin or otherfastening means, is held in position bythe side plate, the passage forthe firing pin being so located that an edge of the side plate extendspartly across the rear end of the said passage for the firing pin, so asto engage therear end of the'firing pin.

The firing pin and the means byv which it is held, in position forms thesubject matter of another; application.

WVhat I claim is: i p 1. Ina break-down gun, the combination with aframe and a barrel'hinged to the frame, of firing mechanism including ahammer, and means for cooking the hammer during the breaking down orpivotal move- 7 ment of the barrel, said means including apower-transmitting lever between the barrel and the hammer, the leverbeing pivoted intermediate of its endsto the frame, and having one armthereof arranged to receive movement from the barrel, the other armthereof being provided with apart coacting th the hammer, anda springfor pressing saidpart into engagement with the hammer and for actuatingthe hammer upon the pull 7 of the trigger, substantially as andfor thepurpose set forth.

2. ,In'a break-down gun, the combination I .with a frame and a 'barrel'hi nged tothe '65 frame, of firingme'ch'a nism including a haintensionthe spring, substantially as and liner, and meansfor cooking the hammerintermediate of its ends to the frame by a horizontal pivot, the leverextending forwardly and rearwardly and having its forward arm arrangedto receive movement from the barrel and its rear arm being pro videdwith a part coacting with the hammer, and with a spring for'pressingsaid partinto engagement with the hammer, the

sirin servin as a main sarin for ac'-- tuatiiig the hammer,substantially as and for the purpose described.

3. in a break-down gun, the combination of firing mechanism including ahammer.

having a cam surface on the sideof the axis thereof, along a diameter,opposite to that onwhi'ch the head of the hammer is' located, saidsurface extending crosswise of said diameter, a main spring, a partacted on by the f naiii spring and engaging said cam surface on one sideof said diameter when the hammer is cocked, and a carrier" for the mainspring and said part, the carrier being operable to move said'partalongthe cam surface toward said diameter to first tension the springwhen the hammer is down and then across said diameter, substantially asand for the purpose described.

at. In a break-down gun, the combination of. firing mechanism includinga hammer hav ng a tail provided with a forwardly facing concave-camsurface, a'main spring,

a part acted on by the main spring and coacting with said surfaceandnormally engaging said surface at the lower end there of, and a pivotedcarrier forthe spring and nearly concentric with the axis of the carrierwhen the hammer is cooked, and the carrier being operable when thehammer is down to move said part upwardly along said said part,the camsurface being arrangedcam surface'to first tension the spring, thenabove the axis ofthe hammer to permit the spring to expand and cook thehammer, and

then back along said cam surfaces to again the purpose specified.

for V 5. in a breakdown-gun, the combination with a frame, and a barrelhinged to the frame,'- of firing mechanism including a hammer havingata'il provided with a cam surface, means for transmittiiig the breakingdown movement'of thebarrelto the hammer, said means including a leverhaving one'end arrangedto'receive' movement from the barrel and havingiits other end. 1 providedwith means for coacting with said'cain'surface, the cam surface being concave. and extending above andbelow'astrai'ght -l ine,'p a ssing through the axesjof the lever andhammer, and said surface being arranged nearly concentric with the axisof the lever when the hammer is cocked, substantially as and for thepurpose set forth.

6. In a breakdown gun, the combination with a frame, and a barrel hingedto the frame, of firing mechanism including a hammer havinga tailprovided with a cam surface, means for transmitting the breaking downmovement of the barrel to the hammer including a lever pivoted to theframe and arranged to receive movement from the barrel, a main springcarried by the leverand a part carried by the lever and arranged to beacted on by the main spring, and engaged with said cam surface 011 thetail of the hammer, substantially as and for the purpose described.

7. In a'break-down gun, the combination with a frame, and a barrelhinged to the frame, of a firing mechanism including a hammer formedwith a tail having a cam surface, and means for cocking the hammercomprising a lever extending lengthwise of the frame and being pivotedbetween its ends by a horizontal pivot to the frame, and having itsfront end arranged to receive movement from the barrel during thebreaking down movement of the barrel and having its rear end formed witha socket, and a spring pressed plunger located in the socket andcoacting with said cam surface, said surface extending crosswise of astraight line passing through the axes of the hammer aiid the lever andbeing normally nearly concentric with the axis of the lever when thehammer is down, the lever being normally arranged to engage said partwith the portion of the tail below said line and said part being movableabove said line and then to its normal position during the breakdownmovement of the gun and the return of the barrel to its normalposition,osubstantially as and for the purpose specified.

8. In.a firearm, a frame, a hammer, a lever pivoted to the frame andhaving a coiled spring,.;thereon, the lever being arranged so that thecoiled spring acts as the main spring on the hammer and means for movingthe lever to compress the spring and cook the hammer, substantially asand for the purpose specified.

In testimony whereof, I have hereunto sign'ed'my name in the presence oftwo attesting- Witnesses, at Fulton in the county of Osweg'o, in theState of New York, this 26th day of -Feby 1913.

4 ARTHUR P. CURTIS.

Witnesses:

C. A. BACHE, H. CARR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

